The purpose of this study is to create a shirt sloper suitable for an elderly male body shape by producing virtual models using a 3D-virtualization program, making a torso prototype using the Yuka CAD system, and employing 3D simulation to virtualize and calibrate the model. First, the following three types of obese dummies are implemented through the CLO 3D program: Type 1 exhibits body fat in the lower body; Type 2 exhibits an obese abdomen; and Type 3 displays a balanced form of obesity. Second, for the design of the shirt pattern, the waist back length (measured value+1), back armhole depth (C/10+12+3+0.5~1.5), front armhole depth (back armhole depth 0~1), front interscye (2C/10‒1+0.5‒0.5), armscye depth (C/10+2+3.5+ 0.5), back interscye (2C/10‒1+1), front chest C (C/4+2.5+1), back chest C (C/4+2.5‒1), front hem C (C/4+2.5+1(+2)), back hem C (C/4+2.5‒1(+2)), cap height (AH/3‒5), and biceps width (Front AH‒1, Back AH‒1) are calculated. Third, the virtual attachment of the shirt pattern is resolved by increasing the front and back armhole depths, and the front and rear wrinkles are improved by adding a back armhole dart. The front hem lift and lateral pull caused by the protrusion of the abdomen are amended by increasing the margin of the chest, waist C, and hip C, with the appearance improved by balanced margin distribution in the front, back, and side panels. The improved retail pattern with an increase in the front armholes C was balanced on the torso plate.

Abstract
I. Introduction
Ⅱ. Methods
    1. Subjects
    2. Production of 3D avatar
    3. Development of shirts sloper
    4. Virtual garment simulation body measurementanalysis
    5. Evaluations of appearance
    6. Data analysis of appearance evaluations
Ⅲ. Results and Discussion
    1. Analysis of virtual garment simulation on thecomparative patterns
    2. Modification for pattern development
    3. Evaluations of virtual garment simulation onthe developed patterns
    4. Suggestion of shirts sloper for elderly obese males
Ⅳ. Conclusion
References

• Ok jin Seong(세종대학교 패션디자인학과) | 성옥진
• Sook jin Kim(세종대학교 패션디자인학과) | 김숙진 Corresponding author